| 摘要 |
PURPOSE:To easily directly read a detected physical quantity from an indicted value by a pointer by switching and controlling the deflection of the analog pointer and the changing quantity of a digital value by as much as the conversion factor of both unit systems of a meter unit and an SI unit at the time of switching both unit systems. CONSTITUTION:In the meter unit system and the SI unit system, the full scale values thereof are made rounded values such as 10, 25, 30, 50 and 100 and a scale part is formed in single. When both unit systems are switched by a switching device 221, the switching control is performed by as much as the conversion factor of both systems by interlocking with the switching by the device 221. Namely, an amplifier 222a for a meter unit system, a variable resistor 222b for span adjustment, an amplifier 223a for an SI unit system and a variable resistor 223b for span adjustment are switched to make the indicated value by the analog pointer 1 and digital display coincide with the full scale value. Therefore, both unit systems are switched to be displayed without making it difficult to read the analog indicated value. |
